View Compilation Error

0_0_26831612_31398\Main.java:2: 错误: 需要class, interface或enum
	public static void main(String[] args ){
	              ^
0_0_26831612_31398\Main.java:4: 错误: 需要class, interface或enum
		int b;
		^
0_0_26831612_31398\Main.java:5: 错误: 需要class, interface或enum
		int sum;
		^
0_0_26831612_31398\Main.java:6: 错误: 需要class, interface或enum
		System.out.println("please a and b:");
		^
0_0_26831612_31398\Main.java:7: 错误: 需要class, interface或enum
		Scanner sc = new Scanner(System.in);
		^
0_0_26831612_31398\Main.java:8: 错误: 需要class, interface或enum
		a=sc.nextInt();
		^
0_0_26831612_31398\Main.java:9: 错误: 需要class, interface或enum
		b=sc.nextInt();
		^
0_0_26831612_31398\Main.java:10: 错误: 需要class, interface或enum
		sum=a+b;
		^
0_0_26831612_31398\Main.java:11: 错误: 需要class, interface或enum
		System.out.println("a+b=:"+sum);
		^
0_0_26831612_31398\Main.java:14: 错误: 需要class, interface或enum
	}
	^
10 个错误